APFIVE Magnetic Force on a Moving Proton
A proton has velocity components $$v_x = 3.0 \times 10^5$$ m/s and $$v_y = 4.0 \times 10^5$$ m/s as it moves through a uniform magnetic field of 0.50 T directed in the +z-direction. What is the magnitude of the magnetic force acting on the proton?
A
3.5×10⁻¹³ N
B
4.0×10⁻¹⁴ N
C
5.0×10⁻¹³ N
D
1.2×10⁻¹³ N
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